Hi all.. advanced thanx for all that infos u give on the forum and thanx a million to digit. recently i bought the SE k750 i. it simply rocks. i found most tips and tricks abt the phone on net. still i find the volume of the phone to be low when in a crowdy place and i am missing some of my calls. the vibration is too smooth, so, i dont even get a hint till i touch it. Most important of all, i need an info from any one of u using this fone. i need the avg battery backup time (including the talktime and standby time) with an occassional use of camera, media player and others as well. i need how much battery backup time u are getting with this, on normal usage of almost all features. Also tips regarding improving the battery life would be appreciated. how much does a spare battery cost? Thanx..